Closure device



Sept 1928' L. R. N. CARVALHQ I 3 CLOSURE DEVICE Filed Oct. 27, 1925 I INVENTOR IS HTTOENE) Patented Sept. 25, 19.?8.

: PYUNITED, srArss LESLIE n. N. CARV HO, or Tor nno, onto.

- 1,685,227 CE-f CLOSURE DEVICE.

Application filed october'a'z, 1925. Serial No. 65,154.

-My invention relates to closures for containers, such as tumblers, jars or similar containers, embodying certain features of and beingin the nature of an improvement. over the structure shown and described in the Carvalho Patents Nunibers.1,413,256; 1,413,257; 1, ll,3,653 and1,413,654.

. In the sealing operation, the metal covers or closures'ai'e commonly found displaced from their usual seatson the container, and, in many instances, a slight ar or accidental blow will knock the cap therefrom ust prior to the act of sealing. y

" accidental jar capable of causing said closure cap to slide off.

A further object of the invention is to produce practical and simple means for removing the cap from the receptacle.

Other objects will appear hereinafter.

Reference being had now to the accompanying drawings forming a part of this specification Figure 1 is a sectional elevation of the container and closure.

Figure 2 is a fragmentary plan of the in ner surface of the cap or closure.

'Figure 3 is a fragmentary isometric view of the combined receptacle and closure, showing the operation of an implement for opening the recetacle.

Figure 4 1s a side elevationof a receptacle and closure constructed in accordance w'th the principles of my invention.

Referring to the drawings for describing in detail the structure which is illustrated therein, areceptacle 5 is shown having tapered walls terminatingat the upper extremity in a short vertical wall 9 having a lower ve r-' tical outer circumferential shoulder. A cover 1 6 constructed of any suitable material such I as sheet metal or heavy waterproof cardboard, is shaped to provide a top portion 8 and a depending circumferential flange or skirt 10.

' It will be noted that the top portions is depressed, leaving an outer annularedge 13' surrounding the depressed portion. A -gas ket 7 of cork or other suitable material is disposed within the top portion 8.-

The marginal portion of the depending flange 10-is provided with a pluralityv of small tabs 11, for a purpose hereinafter to be described, disposed 1 at regular intervals around the depending; flange andproduced by'slitting the said flange. Aswill be seen from Figures 1. and 2', the sections of-the inargin-lietween said tabs are inturned, forming a flexible concavo-coiivexannular flange, Of an 1 inner diameter a little less than the container it is tofit. IAn object of the latter provision is to give the closure a tight peripheral gripping instrumentalit-y around the container, when the former is seated upon the; latter. The tabs 11 depend from the closure. 6,1 as slrownin the drawings, andarecurved'in the same general direction as the closure,.',but with diminutive radii (Fig. 2).

a In the assemblageof my closureovera container m ou'th,t he cover 6 is thrustdownupon the vertical face 9. The depressed part-of the top 8 assists in seating the gasket to the best advantage. upturned annular flange, it Will be noted, accominodates the closure to any imperfection in the manufacture of the container, as well as adapting the closure for further use in the dispensation of the contents of the container.

The depending tabs 11 serve an important purpose during the placing and sealing of the caps on the containers. When the cap is first placed on the container, and before it is engaged and forced down into positionby a capping machine, it is supported with its inturned flangele resting onthe rim of the container. In this position, theftabs ll depend-1' 'ing below the lip preventthe cap fromacci- The resilient character of the dentally sliding out of position'before it'is i forced down on the container by the capping machine. Obviously, there'is left under each 7 a tabv l1 asinall recess between the wall 10 of the closure-and the walls of thecontainer. In the opening operation, any suitable iinplement,such as the tine of a fork, is inserted in the aforesaid recess under a tab 11 and the tab is thereby pried out and upwarchcausing an'upward tearing 15 in the flange 10. The tabs 11 being convex are sufficiently rigid to permit suchtearing ofth'e flange. This tearing of the flange above the tab 11 weakens the, structure somewhat and relinquishes the sealing pressure of the flange, so that the cap can be easily removed, but at the same time is capable of reuse.

Modifications of the above may be resorted to within the spirit andscope of my invention.

' What I claim isi p 1. A receptacle closure comprising a top r portion, a depending flange having a margin thereof formed at regular intervals with Small lugs, said lugs being curved outwardly transversely of their length with diminutive radii to make tearing of said flange expeditious, and a resilient curved flange formed by bending inward the margin between the said lugs, to separably attach the closure to a receptacle by friction. Y

2. Areceptacle' closure having a marginal portion adapted to overlie an exterior por tion of areoeptacle, said marginal portion having a concavo-convex ripping means 7 formed thereon by bending t 1e said marginal portion inwardly and upwardly to provide an annular pocket, and a lip to yieldably and 7 cover-portion, 9. depending marginal flange,

andintegral tabs arrangedat-intervals along. said flan 'e and extending downward therefrom, said tabs being outwardly convexed.

4. A receptacle closure formed of sheet material and comprising atop and 21 depending peripheral flange, the margin of said flange comp rising inturned portions altern atin'g with depending tabs, said tabs being curved about said top to thereby stiffen the tabs and permit insertion of a prying implement.

5. The combination of a receptacle and a closure therefor, comprising a topfcover portion formed with a slightly depressed area-to radii materially shorter than the radius of the project into the receptacle, a depending flange surrounding the receptacle, the lower margin oi the flange havingportions thereof curved inwardly and upwardly for yielding frictional engagement with the side surface of I the receptacle, and'integra-l -tabs arranged between and adjoining said inturned portions, said tabs being extendedv below the inturned portions and spaced from-the recepi tacle throughout their lengths prior to and I during sealing of the receptacle, said "tabs also being curved transversely about radii materially shorter than the radius ofthe top to thereby stiffen the tabs and tion of a prying implement.

permit inser- Signed at Toledo, in the county of Lucas I and State of Ohio, this 22nd day of October,

LESLIE R. N. oA v LHo. p 

